Antenna characterization from arbitrary near field measurement geometry

A method is presented for computing far-field pattern of an antenna under test (AUT) from its near-field measurements taken over an arbitrary geometry (for example hemi sphere). The mathematical formalism and the stability of this method are presented. The effect of reduced signal to noise ratio is studied. The proposed method has been implemented using Matlab software. The numerical validations using analytical radiating model and electromagnetic software results show the efficiency and the stability of the proposed technique.